Tandem disk harrow



c. E. WARD AND F. W. HARRIS.

TANDEM DISK HARROW.

' APPLICATION FILED DEC.3,19I9.

@45 'INYENTO'RS cLAToN E. wARn For-" 0 w HARRIS THEIR ATTO RN EYJ C. E.WARD AND F. W. HARRIS. TANDEM DISK HARROW.

APPLICATION mso Dees. 1919. l Y 194219948, Patented June 27, 1922.

2 SHEETS-SHEET 2.

EN mrwww THEI R :ATTOR N EY:

UNITED' sTATEsrA-TENT OFFICE.

CLATON E. WARD, or OXNARD, AND FORD w. HARRIS, or Los ANGELES,CALIFORNIA, AssIGNoRs To BRRNNRIS MANUFACTURING COMPANY, A CORPORATIONor CALI- FORNIA.

TANDEM DISK HARROW.

Specification of Letters Patent; Patgnted June 27 1922.

Application led December 3, 1919. Serial No. 342,241.

To all whom it may concern.;

Be it known that we, CLATON E. VARD.

and FORD V. HARRIS, both citizens of the United States, the formerresiding at OX- nard, in the county of Ventura, State of yCalifornia,the latter residing at Los Angeles, in the county of Los Angeles, Stateof California, have invented a-new and useful Improvement ComprisingrIla'ndem Disk Harrows, of which the following isa speciication. l y'Referring to the drawing which illustrative purposes only,

Fi 1 is a plan view o-f the harrow showing t e parts in their operativeposition the inoperative position being shown in dotted lines.

Fig. 2 is an elevation partly in section on the line 2-2 of Fig. 1showing the draft gear. l l

Fig. 3 is a perspective view of the draft i device.

near the forward end thereof, The hookv In the embodiment of theinvention shown, a frame 11 is provided, this frame having .a centralchannel 12. Pivoted to the frame 11 at points 13 are four implementgangs 14 each of these gangs consisting of a kframe 15 and av plurality'of bear'- ings 16 carrying shafts. 18 on which disks .17 are free toturn. Secured in the channel 12 is a casting 20 and turning in thecasting 20 is a. shaft 21 which carries a ora-nk'platiJ 22 on its lowerend.` Secured tothe upper end of the shaft 21 is a sheave wheel 23around which a chain 24 passes. The chain 24 is secured by means of abolt 25 to the wheel 23 and each endthereof asses forward to a separateclevis 26. ecured on the disk 22 are a pair of crank pins 3Q `which arelocated on the same. diameter "and at the same radius. Pivoted on thecrank pins 30 are connectingrodsv 31. each of these connecting rodsbeingv pivoted .at its-outer end on a pin 32 which' forms the commonpointy for a toggle formed of links 33, these links being pivoted attheir outer end to pins 34 carried on the gangs 14. Also secured to thepin 32 is a. Itension link'35 which is pivoted at 36 to the frame 11.The clevises 26 are each secured to a. hookr bar 40, these hook barspassing through openings in the channel 12 and having hooks 41 formedbars are 'also provided with shoulders 42 which strike against the`channel and limit the forward motion of the hook bars. Fivoted on a pin43 which is hung from links 44 and 45 pivoted to the -Channel 12 is a.draft Channel 46. Sliding in this channel 1s a. draw' bar 47. The drawbar 47 has a. hole therein by which a. tractor or other draft means maybe attached. The' draw har 47 is guided by rollers 48 and is turnedVupfat its inner end as shown at 49 to carry aZUbolt 50. 'Ifhe U bolt 50is so located that it can be readily caught by the hooks 41 of thevbars40..A Turning on shaft 52 in the channel 12 is a star wheel 53, thiswheel beingconnectedby means of links 54 with the bars 40 'and beingprovided with lines 55 which extend lforwardly to the tractor and bywhich the wheel 53 is operated.v

The method of operationis as follows With the parts in the operativeposition as shown in full lines in Fig.` 1 the line of motion of theharrow is along the line 2 2,

the disks 17 being inclined to this line of motion. lVhen it'is desiredt'o throw the disks into the dotted position for the purpose of movingthe harrow the following procedure is adopted.

The ytractor which is connected to the member 47 is backed up slidingthe member 47 in the member 46 and moving the U holt,50 from theposition shown in- Fig. 3

under the forward hook 41 into a position directly below orysomewhat-back of, the rear hook 41.- The' driver of the harrow .thenmanipulates the lines 55. to lift the forward hook 41 and dro-p vtherear hook 41 to catch in the U bolt 50. `Upon starting up the tractorthe rear hook 41 is pulled for-vv ward pulling on the chain 24- `androtating the sheave wheel 23 and the crank pins 30 throughAapproximately 180. This pushes the links 33 from the position shown infull lines into the position shown in dotted lines pulling Ithe points34 inwardly until the disks 17 are parallel to each other so that theharrow can be readily transported. If it is desired to throw the gangsback to their inclined position the tractor is aga-ifi backed up pushingthe bolt 50 back and the rear hook 41 which is then dropped in place,the front hook being lifted. Upon again starting the tractor the 'sheave23 is rotated.

in the opposite direction to that previously described and the links 33are pulled back into their full line position.

le claim as our invention 1. A cultivator comprising a. front pair ofimplement gangs; a rear pair of implement gangs; a frame; means forpivoting the inner end of each gang to said frame; a draft device; asheave wheel; means by which said draft device can be used to rotatesaid sheave wheel in either direction; and means by which said rotationof said sheave wheel throws said gangs to and from the operativeposition.

2. A cultivator comprising a front pair of implementgangs; a rear pairof implement gangs; a frame; means for pivoting the inner end ofv eachgang to said frame; a sheave wheel mounted on said frame; a chainpassing around and secured to said sheave wheel; a draft device; meansby which said draft device may be secured-to either end of said chain;and means for utilizing the rotative movement imparted to said sheavewheel to throw said gangs to and from the operative position.

3. A cultivator comprising a front pairV of implement gangs; a rear pairof implement gangs; a frame; means for pivoting the inner end of eac-hgang to said frame; a sheave wheel mounted on said frame; a chainpassing around and secured to said sheave wheel; a draft device; meansby which said draft device may be secured to either end of said chain;four toggle bars each secured at theirouterends to one of said gangs andeach secured at its inner end to another of said bars, forming twotoggles located at either side of said sheave' and means by which themovement of said sheave Sets said toggles to throw said gangs into theoperative position or breaks said toggle to throw said gangs intomutually parallel relationship.

4. A cultivator comprising a front pair of implement gangs; a rear pairof implement gangs; a frame; means for pivoting the inner end of eachgang to said frame; a. sheave wheel mounted on said frame; a chainpassing around and secured to said sheave wheel; a draft device; meansby which said draft device may be secured to either end of said chain;four toggle bars each secured at their outer ends to one of said gangsand each secured at its inner end to another of said bars, forming twotoggles located at either side of said sheave; two.tension links eachlsecured at one end to said frame and at the other end to the commonpoint of one of said toggles; and means by which the movement of saidsheave sets said toggles to throw said gangs into the operative positionor breaks said toggle to throw said gangs into mutually parallelrelationship.

5. A cultivator comprising a front pair of implement gangs; a rear pairof imple ment gangs; a frame; means for pivoting the inner end of eachgang to said frame; a sheave wheel mounted on said frame; a chainpassing around and secured to said sheave wheel; a draft device; meansby which said draft device may be secured to either end of said chain;four toggle bars each secured at their outer ends to one of said gangsand each secured at its inner end to another of said bars, forming twotoggles located at either side of said sheave; crank pins operating at afixed crank radius about the axis of said sheave wheel by which they areoperated; and two connecting rods each pivoted on one of said crank pinsat one end and on the common point of one of said toggles on the other.

6. A cultivator comprising a front pair of implement gangs; a rear pairof implement gangs; a frame; means for pivoting each gang to said frame;a draft device; a sheave wheel; means by which said draft device can beused to rotate said sheave'wheel in either direction; and means by whichsaid rot-ation of said sheave wheel throws said gangs to and from theoperative position.

7. A cultivator comprising a front pair of implement gangs; a rear pairof implement gangs; a frame; means for pivoting each gang to said frame;a sheave wheel mounted on said frame; a chain passing around and securedto said sheave wheel; a draft device; means by which said draft devicemay be secured to either end of said chain; and means for utilizing therotative movement l imparted to said sheave wheel to throw said gangs toand from the operative position.

8. A cultivator comprising a front pair of implement gangs; a rear pairof implement gangs; a frame; means forv pivoting each gang to saidframe; a sheave wheel mounted on said frame; a chain passing around andsecured to said sheave wheel; a draft device; means by which said draftdevice may be secured to either end of said chain; four toggle bars eachsecured at their outer ends to one of said gangs and each secured at itslnner end to another of said bars, forming two toggles located at eitherside of said sheave; and means by which the movement of. said sheavesets said' toggles to throw said gangs into the loperative position orbreaks said toggletogthrow said` gangs into mutually parallelrelationship. 9. A cultivator comprising a front air of lmplement gangs;a rear pair of imp ement gangs; a frame; means for pivoting each gang tosaid frame; a sheave wheel mounted on said frame; a chain passing aroundand secured to said sheave wheel; a draft device: means by which saiddraft device mav be secured to either end of said chain; Ufour togglebars each secured at their outer ends to the common point of one ofsaid, toggles; 'and lneans by which the movement of said sheave setssaid toggles to throw said gangs into the operative position or breakssaid toggle to throw said gangs into mutually parallel relationship.

10.'A cultlvator comprising a front pair.

of implement gangs; a rear pair of implement gangs; a frame; means forpivoting each gang to said frame; a sheave wheel mounted on said frame;achain passing around and secured to said sheave wheel; a

draft device; means by which said draft device may becseeured to eitherend of said i chairufour toggle bars each secured at their outer ends toone of said gangs Vand each secured at its inner end to another of saidbars; forming two tggles locatefdjat either sidev of said sheave; crankpins 'operating at a fixed crank radius abut the axsof said sheave wheelby which they arev operated; and two connecting rods .each pivoted onone of saidcrank pins at one end on the common point of oneof-saidtoggles on the other. f1 t op In testimony w-hereof,,whave'hereunto set our hands at. Los Angeles, California, this .28th dayof November, 1919.

CLATO'N E. WARD.

FORD W. HARRIS.

